Variable-angle fin cutting machine

Abstract

The utility model discloses a variable-angle fin cutting machine, which is used for the cutting operation of fins in a plate-fin heat exchanger, the variable-angle fin cutting machine comprises a frame, a rotating stand assembly and a feeding mechanism, a first bearing assembly, a dial and an angle adjusting handle are arranged on the frame, the rotation of the angle adjusting handle drives the rotating stand assembly to rotate in the same direction, and the feeding mechanism is arranged on the rotating stand assembly. The rotating stand assembly comprises a rotating stand disc, a door frame, a guide rail assembly, a gear ring clack, a water tank, a flat sliding assembly, a lifting assembly, a flat sliding motor and a bearing seat assembly, the upper edge of the saw blade extends out of the disc face of the rotating stand or retracts into the disc face of the rotating stand through the lifting action of the lifting assembly, and the feeding mechanism comprises a material guiding assembly, a feeding assembly and a material pressing assembly. According to the scheme, the angle adjusting handle rotates to drive the rotating frame assembly to rotate in the same direction so as to adjust the relative angle of a fin blank and a saw blade, automatic feeding is achieved through the feeding mechanism, and therefore variable-angle cutting of fins is more accurate, meanwhile, the working efficiency and the cutting quality are improved, and the efficiency and the quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of forming and processing fins in a plate-fin heat exchanger, in particular to a variable-angle fin cutting machine. Background Art

[0002] Plate-fin heat exchanger is a heat exchanger with high heat transfer efficiency, small size and light weight. At present, plate-fin heat exchanger is widely used in various oil, water and gas heating and / or cooling in engineering machinery, general machinery, internal combustion locomotive and other departments. For example: aluminum plate-fin heat exchanger is widely used in heat exchangers of air separation equipment; ethylene unit, synthetic ammonia unit, natural gas liquefaction (LNG) and separation unit in petrochemical industry; used in cryogenic hydrogen, helium, refrigeration and liquefaction equipment; used in refrigeration and air conditioning fields; used in automobile and aviation industries.

[0003] In the structure of aluminum plate-fin heat exchanger, the core component is the fin. Due to the structural and process reasons of the heat exchanger, the fin blank must be cut according to the size and angle required by the design before the fin is assembled. At present, the industry generally uses a fin cutting machine with a fixed angle between the saw blade and the machine. When a certain angle needs to be cut, it is necessary to adjust the relative angle between the fin blank and the saw blade to achieve it. The adjustment is inconvenient, the precision is low, and it cannot feed automatically.

[0004] In view of this, how to solve the problems of the existing fin cutting machine, such as inconvenient adjustment, low precision, and inability to automatically feed, has become a topic to be studied and solved by the present utility model. Utility Model Content

[0005] The utility model aims to provide a variable angle fin cutting machine.

[0006] In order to achieve the above-mentioned purpose, the utility model proposes a variable angle fin cutting machine, which is used for cutting fins in a plate-fin heat exchanger. The variable angle fin cutting machine includes a frame, a rotating frame assembly, and a feeding mechanism;

[0007] The frame is a frame structure for providing support for various components. The frame is equipped with a first bearing assembly, a dial, and an angle adjustment handle. The dial is coaxial with the angle adjustment handle. The angle adjustment gear is connected to the angle adjustment handle. The angle adjustment gear is meshed with the gear ring petal of the rotating frame assembly through the intermediate wheel. The rotation of the angle adjustment handle drives the rotating frame assembly to rotate in the same direction.

[0008] The rotating frame assembly is installed on the first bearing assembly of the frame, and the rotating frame assembly includes a rotating frame disc, a door frame, a guide rail assembly, a gear ring petal, a water tank, a flat slide assembly, a lifting assembly, a flat slide motor, and a bearing seat assembly;

[0009] The rotating frame disc is mounted on the first bearing assembly, a door frame is mounted on the rotating frame disc, and a pressing assembly for pressing the fins is mounted on the door frame;

[0010] The gear ring petal is coaxial with the rotating frame disc and is connected and fastened;

[0011] The guide rail assembly is installed under the rotating frame disc, the guide rail assembly is connected and fastened with the rotating frame disc and the bearing seat assembly, the flat slide assembly is installed on the guide rail assembly, the lifting assembly is equipped with a saw blade, the flat slide assembly and the lifting assembly drive the saw blade on the lifting assembly to reciprocate and move up and down along the guide rail assembly, and the lifting action of the lifting assembly causes the upper edge of the saw blade to extend out of the rotating frame disc surface or retract into the rotating frame disc surface;

[0012] The feeding mechanism includes a material guiding assembly, a feeding assembly and a material holding assembly, which are installed on the feeding station of the frame. The material guiding assembly is a component used to provide a guiding and limiting function for the fins, the feeding assembly is a component used to send the fins to the cutting station, and the material holding assembly is a component used to lay the fins flatly on the rotating rack disc.

[0013] The relevant contents of this utility model are explained as follows:

[0014] 1. Through the implementation of the above technical scheme of the utility model, through the study of the existing plate-fin heat exchanger fin assembly before the need to cut the fin blank according to the design requirements of the size and angle, the utility model is designed a variable angle fin cutting machine, the angle adjustment handle is driven by the rotation of the rotating frame assembly to rotate in the same direction to achieve the adjustment of the relative angle between the fin blank and the saw blade, and the adjustment is convenient and accurate, and at the same time the saw blade on the lifting assembly is driven by the leveling assembly and the lifting assembly to reciprocate and lift up and down along the guide rail assembly, the lifting action of the lifting assembly makes the upper edge of the saw blade extend out of the rotating frame disc surface or retract into the rotating frame disc surface; and the feeding mechanism is used to realize automatic feeding, so that the fins are flatly laid on the rotating frame disc, reducing the cutting size error caused by the elastic deformation of the fins, so that the variable angle cutting of the fins is more accurate, while improving the work efficiency and cutting quality, and improving efficiency and quality.

[0015] 2. In the above technical solution, the frame as a whole is a four-column frame structure, the frame is equipped with an electric control box, an air compressor, a water tank and a water pump, the frame is equipped with swing doors around, and four corner flats are set at the bottom of one of the four columns of the frame; a control box is set on the frame.

[0016] 3. In the above technical solution, the clamping assembly includes a guide rod, a cylinder, a clamping beam, and a rubber pad. The guide rod and the cylinder are installed on the door frame, the clamping beam is arranged at the lower end of the guide rod and the cylinder, and the rubber pad is arranged below the clamping beam. The clamping beam is pushed by the cylinder to clamp the fins through the rubber pad to prevent the fin blank from being misplaced during the cutting process. The rubber pad compensates for the inconsistency of the fin height by its elasticity, which causes the short teeth to fail to clamp.

[0017] 4. In the above technical solution, the material guide assembly includes two material guide rods, which extend from the feeding station of the frame to near the cutting station. The spacing between the two material guide rods is set corresponding to the width of the fin, and the thickness of the material guide rod is smaller than the height of the fin.

[0018] 5. In the above technical solution, the feeding assembly is installed in the middle of the feeding station of the frame, and the feeding assembly consists of two parts, the left and the right, and the feeding assembly includes a conveyor belt, an upper belt pressing plate, and a lower belt pressing plate.

[0019] 6. In the above technical solution, the weighing assembly includes a weighing shaft, a pressure rod, and a weighing support plate. The weighing shaft is installed on the clip of the guide rod, the pressure rod is pressed on the fin, and the pressure rod makes the fin lay flat on the rotating frame disc. The weighing support plate is installed on the pressure rod, and a counterweight block is selectively set on the weighing support plate.

[0020] 7. In the above technical solution, the rotating frame assembly also includes a contact, a ball screw, a flat motor, and a water tank;

[0021] The contacts are mounted on the outer sides of both ends of the guide rail assembly, and their positions can be adjusted longitudinally along the guide rail assembly;

[0022] The ball screw is mounted on the bearing seat assembly, and a pulley is mounted on one end thereof, which can rotate under the drive of the slide motor. The nut is fastened to the slide assembly, and when the nut rotates, the slide assembly is driven to move forward and backward.

[0023] Both ends of the water tank are connected to the bearing seat assembly, and the saw blade is cooled by the coolant in the water tank;

[0024] The flat slide assembly includes a flat slide frame, a nut, a flat block, a lug, a moving contact, a spring, a camshaft, a cam, a pin, and a longitudinal slide block;

[0025] When the slide frame moves to the contact position, the moving contact on the slide frame is driven to rotate around the axis, driving the coaxial cam to rotate, thereby realizing the lifting action of the lifting assembly, that is, the upper edge of the saw blade extends out of the rotating frame disc surface or retracts into the rotating frame disc surface.

[0026] 8. In the above technical solution, the flat slide frame provides support for other components in the flat slide assembly and is positioned and fastened by connecting parts.

[0027] The nut is installed on the end surface of the flat slide frame and is positioned and fastened by the connecting piece. When the ball screw rotates, it drives the flat slide block to slide horizontally.

[0028] The smooth blocks are installed on the two sides of the flat slide frame and are positioned and fastened by connecting pieces so that the flat slide frame can slide horizontally along the guide rail assembly;

[0029] The support lug is installed under the flat slide frame and is positioned and fastened by a connecting piece to provide support for the cam;

[0030] The moving contact is mounted on the camshaft, and when the sliding assembly moves to touch the contact, the cam is driven to rotate until the cam rotates automatically under the action of the spring;

[0031] The two ends of the spring are respectively hung on pins installed on the flat slide frame and the moving contact, and cooperate with the contact to accelerate the rotation of the cam;

[0032] The camshaft is mounted on the lug, on which the cam and the moving contact are mounted, transmitting the rotating motion of the moving contact to the cam;

[0033] The cam is mounted on the camshaft, rotates synchronously with the moving contact, and cooperates with the lifting frame to realize the lifting action of the lifting assembly by gravity;

[0034] The two pins are respectively mounted on the flat slide frame and the moving contact, and are used to install the spring to transmit the spring force to the flat slide frame and the moving contact;

[0035] The longitudinal slide block is installed on both end surfaces of the flat slide frame to guide the positioning lifting assembly.

[0036] 9. In the above technical solution, the lifting assembly includes a saw blade, a bearing assembly, a longitudinal guide rail assembly, a motor base plate, a lifting frame, a saw motor, a saw shaft pulley, a belt, and a motor pulley.

[0037] 10. In the above technical solution, the saw blade is mounted on the bearing assembly and the saw shaft is fastened by a connecting member;

[0038] The bearing assembly is provided with saw blades and saw shaft pulleys at both ends, and is connected to a longitudinal guide rail assembly at the bottom;

[0039] The longitudinal guide rail assembly is installed in the longitudinal slider, the upper end is connected to the bearing assembly, and the lower end is connected to the motor seat plate, which is fastened by the connecting piece;

[0040] The motor base plate is connected to the longitudinal guide rail assembly on the upper side and is equipped with a lifting frame, and the motor is installed on the lower side;

[0041] The lifting frame is installed on the motor base plate, fastened by a connecting piece, and acts on the cam. Under the action of gravity, the lifting assembly is lifted and lowered along the longitudinal guide rail as the cam rotates, that is, the saw blade is lifted and lowered;

[0042] The motor is installed on the motor base plate, and the motor pulley is installed on the shaft end;

[0043] The saw shaft pulley is installed at one end of the bearing assembly, and a belt is installed in the groove, and the saw blade is rotated under the drive of the belt;

[0044] The upper end of the belt is installed in the saw shaft pulley groove, and the lower end is installed in the motor pulley groove to transmit the torque of the motor to the saw shaft pulley;

[0045] The motor pulley is mounted on the motor shaft to transmit the motor torque to the belt.

[0046] 11. In this utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] 12. In the present utility model, the orientation or position relationship indicated by the terms "center", "upper", "lower", "axial", "bottom", "inner", "outer", etc. is based on the orientation or position assembly relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0048] 13. In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0049] Due to the application of the above scheme, the utility model has the following advantages and effects compared with the prior art:

[0050] The above-mentioned technical scheme of the utility model is designed through the study of the cutting of the fin blank according to the size and angle required by the design before the fins of the existing plate-fin heat exchanger are assembled. The utility model has a variable angle fin cutting machine. The rotation of the angle adjustment handle drives the turntable assembly to rotate in the same direction to adjust the relative angle between the fin blank and the saw blade. The adjustment is convenient and accurate. At the same time, the saw blade on the lifting assembly is driven to reciprocate and lift up and down along the guide rail assembly through the flat slide assembly and the lifting assembly. The lifting action of the lifting assembly makes the upper edge of the saw blade extend out of the turntable disc surface or retract into the turntable disc surface; and the feeding mechanism realizes automatic feeding, so that the fins are flatly laid on the turntable disc, reducing the cutting size error caused by the elastic deformation of the fins, so that the variable angle cutting of the fins is more accurate, while improving the work efficiency and cutting quality, thereby improving efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1This is a schematic structural diagram of a variable angle fin cutting machine according to an embodiment of the utility model;

[0052] Figure 2 This is a schematic diagram of the structure of the frame in the embodiment of the utility model;

[0053] Figure 3 It is a schematic diagram of the transmission between the dial, the angle adjustment handle and the gear ring petal in the embodiment of the utility model;

[0054] Figure 4 This is a schematic diagram of the structure of the feeding mechanism in the embodiment of the utility model;

[0055] Figure 5 This is a schematic diagram of the structure of the ballast mechanism in the embodiment of the utility model;

[0056] Figure 6 This is a structural schematic diagram of the rotating frame assembly in the embodiment of the utility model (angle 1);

[0057] Figure 7 This is a structural schematic diagram of the rotating frame assembly in the embodiment of the utility model (angle 2);

[0058] Figure 8 This is a schematic diagram of the structure of the flat slide assembly in the embodiment of the utility model;

[0059] Fig. 9 It is a structural schematic diagram of the lifting assembly in the embodiment of the utility model. DETAILED DESCRIPTION

[0060] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0061] like Figure 1 As shown, the first embodiment of the utility model proposes a variable angle fin cutting machine, which is used for cutting fins in a plate-fin heat exchanger. The variable angle fin cutting machine includes a frame, a rotating frame assembly, and a feeding mechanism;

[0062] The frame is a frame structure for providing support for various components. The frame is equipped with a first bearing assembly, a dial, and an angle adjustment handle. The dial is coaxial with the angle adjustment handle. The angle adjustment gear is connected to the angle adjustment handle. The angle adjustment gear is meshed with the gear ring petal of the rotating frame assembly through the intermediate wheel. The rotation of the angle adjustment handle drives the rotating frame assembly to rotate in the same direction.

[0063] The rotating frame assembly is installed on the first bearing assembly of the frame, and the rotating frame assembly includes a rotating frame disc, a door frame, a guide rail assembly, a gear ring petal, a water tank, a flat slide assembly, a lifting assembly, a flat slide motor, and a bearing seat assembly;

[0064] The rotating frame disc is mounted on the first bearing assembly, a door frame is mounted on the rotating frame disc, and a pressing assembly for pressing the fins is mounted on the door frame;

[0065] The gear ring petal is coaxial with the rotating frame disc and is connected and fastened;

[0066] The guide rail assembly is installed under the rotating frame disc, the guide rail assembly is connected and fastened with the rotating frame disc and the bearing seat assembly, the flat slide assembly is installed on the guide rail assembly, the lifting assembly is equipped with a saw blade, the flat slide assembly and the lifting assembly drive the saw blade on the lifting assembly to reciprocate and move up and down along the guide rail assembly, and the lifting action of the lifting assembly causes the upper edge of the saw blade to extend out of the rotating frame disc surface or retract into the rotating frame disc surface;

[0067] The feeding mechanism includes a material guiding assembly, a feeding assembly and a material holding assembly, which are installed on the feeding station of the frame. The material guiding assembly is a component used to provide a guiding and limiting function for the fins, the feeding assembly is a component used to send the fins to the cutting station, and the material holding assembly is a component used to lay the fins flatly on the rotating rack disc.

[0068] In an embodiment of the utility model, the frame as a whole is a four-column frame structure, an electric control box, an air compressor, a water tank and a water pump are installed in the frame, a swing door is installed around the frame, and four corner flats are set at the bottom of one of the four columns of the frame; a control box is set on the frame.

[0069] In the embodiment of the utility model, the clamping assembly includes a guide rod, a cylinder, a clamping beam, and a rubber pad. The guide rod and the cylinder are installed on the door frame, the clamping beam is arranged at the lower end of the guide rod and the cylinder, and the rubber pad is arranged below the clamping beam. The clamping beam is pushed by the cylinder to clamp the fins through the rubber pad to prevent the fin blank from being misplaced during the cutting process. The rubber pad compensates for the inconsistency of the fin height by its elasticity, which causes the short teeth to fail to clamp.

[0070] In an embodiment of the utility model, the material guide assembly includes two material guide rods, which extend from the feeding station of the frame to near the cutting station. The spacing between the two material guide rods corresponds to the width of the fin, and the thickness of the material guide rod is smaller than the height of the fin. The feeding assembly is installed in the middle of the feeding station of the frame. The feeding assembly consists of two parts, left and right. The feeding assembly includes a conveyor belt, an upper pressure belt plate, and a lower pressure belt plate. The material holding assembly includes a holding shaft, a pressure rod, and a holding support plate. The holding shaft is installed on the clip of the material guide rod, and the pressure rod is pressed on the fin. The pressure rod makes the fin lay flat on the rotating frame disc. The holding support plate is installed on the pressure rod, and a counterweight block is selectively set on the holding support plate.

[0071] In an embodiment of the utility model, the rotating frame assembly further includes a contact, a ball screw, a flat slide motor, and a water tank;

[0072] The contacts are mounted on the outer sides of both ends of the guide rail assembly, and their positions can be adjusted longitudinally along the guide rail assembly;

[0073] The ball screw is mounted on the bearing seat assembly, and a pulley is mounted on one end thereof, which can rotate under the drive of the slide motor. The nut is fastened to the slide assembly, and when the nut rotates, the slide assembly is driven to move forward and backward.

[0074] Both ends of the water tank are connected to the bearing seat assembly, and the saw blade is cooled by the coolant in the water tank;

[0075] The flat slide assembly includes a flat slide frame, a nut, a flat block, a lug, a moving contact, a spring, a camshaft, a cam, a pin, and a longitudinal slide block;

[0076] When the slide frame moves to the contact position, the moving contact on the slide frame is driven to rotate around the axis, driving the coaxial cam to rotate, thereby realizing the lifting action of the lifting assembly, that is, the upper edge of the saw blade extends out of the rotating frame disc surface or retracts into the rotating frame disc surface.

[0077] In an embodiment of the utility model, the lifting assembly includes a saw blade, a bearing assembly, a longitudinal guide rail assembly, a motor base plate, a lifting frame, a saw motor, a saw shaft pulley, a belt, and a motor pulley.

[0078] Next, the technical solution of the present utility model is described with reference to one specific detailed embodiment.

[0079] The basic structure of the automatic feeding variable angle fin cutting machine of this detailed embodiment is as follows Figure 1 As shown, its specific structure is introduced as follows.

[0080] 1. Rack:

[0081] The frame 1.1 is a four-column frame structure as a whole, providing support for other components.

[0082] See Figure 2The frame is equipped with an electric control box 1.2, an air compressor 1.3, a water tank and a water pump 1.4, and a bearing assembly 1.5. The frame is surrounded by a swing door 1.6, and the frame is equipped with a dial 1.7 and an angle adjustment handle 1.8.

[0083] The electric control box 1.2 receives power supply, provides power to other electrical devices, receives instructions and parameters from the control box, and controls each electrical device to run according to the designed program.

[0084] The air compressor 1.3 provides a power air source for the pneumatic device through an air pipe.

[0085] The water tank and the water pump 1.4 provide cooling liquid to the saw blade through the water pipe.

[0086] The bearing assembly 1.5 is used to position the rotating frame assembly.

[0087] The 1.6-inch swing door facilitates equipment maintenance.

[0088] The dial 1.7 is installed on the frame, coaxial with the angle adjustment handle 1.8, with 10 primary scale lines evenly distributed on the outer edge, the primary scale lines indicate the integer degrees of the rotating frame angle, and 100 secondary scale lines, the secondary scale lines indicate the rotating frame angle of 0.1 degrees. The dial 1.7 cooperates with the pointer of the angle adjustment handle 1.8 to indicate the angle position of the rotating frame.

[0089] The angle adjustment handle 1.8 is internally connected with the angle adjustment gear 1.8.2, which meshes with the gear ring petal 1.8.1 of the rotating frame assembly through the intermediate wheel 1.8.3. The rotation of the angle adjustment handle drives the rotating frame assembly to rotate in the same direction. The angle adjustment handle 1.8 has a pointer. Figure 3 .

[0090] The four corners are flat 1.9, which makes it easy to adjust until the four columns touch the bottom evenly at the installation site.

[0091] 2. Control box: The control box 2 is set according to ergonomics and mounted on the machine corner column. It is a human-machine dialogue interface that realizes parameter setting and command control. It works together with the electric control box to control each actuator and realize the operation of the entire machine according to the set program.

[0092] 3. Material guide components:

[0093] Two guide rods 3 are configured, located on the rotating frame plate, between the feeding mechanism, and fixed to the frame by the action of the clips and fasteners. The guide rod spacing is set according to the fin width, and the guide rod thickness is set according to the fin height-1. Under the guiding and limiting action of the guide rod, the fin is fed forward according to the set position.

[0094] 4. Feeding components:

[0095] The feeder is installed in the middle of the feeding end of the frame, and consists of two parts, left and right. Under the joint action of its motor, reducer, and synchronous shaft, the power is transmitted to the conveyor belt 4.1. Under the action of the upper belt pressing plate 4.2 and the lower belt pressing plate 4.3, the conveyor belt applies appropriate pressure to the fins and sends them to the cutting saw. The distance between the belt pressing plates can be adjusted according to the height of the fins, and the pressure can be adjusted according to the pressure. Figure 4 .

[0096] 5. Ballast components:

[0097] The axis 5.1 of the weight-bearing device is mounted on the guide rod clip, and can float according to the height of the fin. Under the action of its gravity, the pressure rod 5.2 makes the fin lay flat on the rotating frame disc, reducing the cutting size error caused by the elastic deformation of the fin. If the fin rigidity is large and the flatness error is large, a counterweight can be added to the weight-bearing device support plate 5.3. Figure 5 .

[0098] 6. Rotating frame assembly:

[0099] The rotating frame assembly is installed on the bearing assembly on the frame and can be adjusted steplessly within the range of -5° to 75°. The rotating frame disc can have scale lines from -10° to 90°, as well as a hand hole cover 6.1.1 and a diamond grinding disc 6.1.2. Figure 6 .

[0100] A gantry (6.2) is mounted on the rotating frame disc, and a guide rod 6.2.1, a cylinder 6.2.2, a pressing beam 6.2.3, and a rubber pad 6.2.4 are mounted on the gantry. The pressing beam is pushed by the cylinder to press the fins through the rubber pads to prevent the fin blanks from being misplaced during the cutting process, and the rubber pads compensate for the inconsistency of the fin heights by their elasticity, which causes the short teeth to be unable to be pressed.

[0101] A contact (6.3), a guide rail assembly 6.4, a gear ring petal 6.5, a ball screw 6.6, a water tank 6.7, a flat slide frame 6.8, a lifting assembly 6.9, a flat slide motor 6.10, and a bearing seat assembly 6.11 are arranged under the rotating frame disc.

[0102] The contact (6.3) is mounted on the outer sides of both ends of the guide rail assembly, and its position can be adjusted longitudinally along the guide rail assembly. When the flat slide frame moves to the near end position, the moving contact 6.8.5 on the flat slide frame is driven to rotate around the axis, driving the coaxial cam 6.8.8 to rotate, realizing the lifting action of the lifting assembly, that is, the upper edge of the saw blade 6.9.1 extends out of the rotating frame disc surface or retracts into the rotating frame disc surface.

[0103] The guide rail assembly 6.4 is installed under the rotating frame disc, connected and fastened with the disc 6.1 and the bearing seat assembly 6.11, and the flat slide assembly 6.8 is installed on the guide rail.

[0104] The gear ring petal 6.5 is coaxial with the disc 6.1 and is connected and fastened, and meshes with the intermediate wheel 1.8.3. When the angle adjustment handle 1.8 rotates, the rotating frame assembly is driven to rotate. When the angle adjustment handle 1.8 does not move, the angle position of the rotating frame assembly is locked.

[0105] The ball screw 6.6 is mounted on the bearing seat assembly 6.11, and a pulley is mounted on one end thereof, which can rotate under the drive of the flat slide motor 6.10. The screw nut is fastened to the flat slide assembly 6.8. When the ball screw rotates, the flat slide assembly 6.8 is driven forward and backward through the screw nut.

[0106] The two ends of the water tank 6.7 are connected to the bearing seat assembly 6.11. When the water tank and the water pump 1.4 are in operation, the water is filled with water from the water inlet through the water pipe, and the excess water flows out from the overflow port and flows back to the water tank through the water pipe. When the saw blade is in operation, the water in the water tank 6.7 cools the saw blade. Note that the water here is a coolant, which has the dual functions of cooling and lubricating the saw blade.

[0107] The flat slide assembly 6.8 is installed on the guide rail assembly and can move forward and backward along the guide rail under the push of the ball screw. Figure 8 .

[0108] The flat slide assembly is composed of the following parts: flat slide frame 6.8.1, screw nut 6.8.2, smooth block 6.8.3, lug 6.8.4, moving contact 6.8.5, spring 6.8.6, camshaft 6.8.7, cam 6.8.8, pin 6.8.9, longitudinal slide block 6.8.10 and fasteners.

[0109] The slide frame 6.8.1 provides support for other components in the slide assembly and is positioned and fastened through connectors.

[0110] The screw nut 6.8.2 is installed on the end face of the flat slide frame and is positioned and fastened by the connecting piece. When the ball screw 6.6 rotates, it drives the flat slide block to slide horizontally.

[0111] The smooth blocks 6.8.3 are installed on the two sides of the flat slide frame and are positioned and fastened by connecting pieces so that the flat slide frame can slide horizontally along the guide rail assembly 6.4.

[0112] The support ear 6.8.4 is installed under the flat slide frame and is positioned and fastened by connecting parts to provide support for the cam.

[0113] The moving contact 6.8.5 is installed on the camshaft. When the sliding assembly moves to touch the contact, it drives the cam to rotate until the cam rotates automatically under the action of the spring.

[0114] The two ends of the spring 6.8.6 are respectively hung on the pins installed on the flat slide frame and the moving contact, cooperating with the contact to accelerate the rotation of the cam.

[0115] The camshaft 6.8.7 is mounted on the lug, on which the cam and the moving contact are mounted, transmitting the rotation of the moving contact to the cam 6.8.8.

[0116] The cam 6.8.8 is installed on the camshaft, rotates synchronously with the moving contact, and cooperates with the lifting frame 6.9.5. The lifting assembly 6.9 is lifted by the cam, and the lifting assembly 6.9 is lowered by gravity.

[0117] The two pins 6.8.9 are respectively installed on the flat slide frame and the moving contact, and are used to install the spring to transmit the spring force to the flat slide frame and the moving contact.

[0118] The longitudinal slide block 6.8.10 is installed on both end surfaces of the flat slide frame to guide the positioning lifting assembly 6.9.

[0119] The lifting assembly 6.9 is installed in the flat slide assembly, and is positioned by the cooperation of the guide rail and the slider and the cam and the lifting frame. It is composed of the following parts. Fig. 9 .

[0120] Saw blade 6.9.1, bearing assembly 6.9.2, longitudinal guide rail assembly 6.9.3, motor seat plate 6.9.4,

[0121] Lifting frame 6.9.5, motor 6.9.6, saw shaft pulley 6.9.7, belt 6.9.8, motor pulley 6.9.9 and connecting parts, etc.

[0122] The saw blade 6.9.1 is mounted on the bearing assembly and the saw shaft is fastened by a connecting piece.

[0123] Saw blade 6.9.1 and saw shaft pulley 6.9.7 are respectively mounted on both ends of bearing assembly 6.9.2, and longitudinal guide rail assembly 6.9.3 is connected below.

[0124] The longitudinal guide rail assembly 6.9.3 is installed in the longitudinal slide block 6.8.10, and the upper end is connected to the bearing assembly

[0125] Part 6.9.2, the lower motor base plate 6.9.4, is fastened by connecting parts.

[0126] The motor base plate 6.9.4 is connected to the longitudinal guide assembly and is installed with the lifting frame 6.9.5.

[0127] Install motor 6.9.6 below.

[0128] The lifting frame 6.9.5 is mounted on the motor base plate 6.9.4, fastened by a connector, and acts on the cam 6.8.8. Under the action of gravity, the lifting assembly 6.9 is lifted and lowered along the longitudinal guide rail as the cam rotates, that is, the saw blade is lifted and lowered.

[0129] The motor 6.9.6 is mounted on the motor base plate 6.9.4, and the motor pulley 6.9.9 is mounted on its shaft end.

[0130] Saw shaft pulley 6.9.7 is installed on one end of bearing assembly, and belt 6.9.8 is housed in the groove, and driven by belt 6.9.8, it rotates with saw blade.

[0131] Belt 6.9.8 upper end is contained in the saw shaft belt pulley 6.9.7 groove, and lower end is contained in the motor belt pulley 6.9.9 groove, and the torque of motor is transmitted to the saw shaft belt pulley.

[0132] The motor pulley 6.9.9 is mounted on the motor 6.9.6 shaft and transmits the motor torque to the belt.

[0133] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A variable angle fin cutting machine, used for cutting fins in plate-fin heat exchangers, characterized in that: The variable angle fin cutting machine comprises a frame (1.1), a rotating frame assembly (6), and a feeding mechanism; The frame (1.1) is a frame structure for providing support for various components. A first bearing assembly (1.5), a dial (1.7), and an angle adjustment handle (1.8) are mounted on the frame (1.1). The dial (1.7) and the angle adjustment handle (1.8) are coaxial. The angle adjustment handle (1.8) is internally connected to an angle adjustment gear (1.8.2). The angle adjustment gear (1.8.2) meshes with a gear ring petal (6.5) of the rotating frame assembly via an intermediate wheel (1.8.3). The rotation of the angle adjustment handle (1.8) drives the rotating frame assembly (6) to rotate in the same direction. The rotating frame assembly (6) is mounted on the first bearing assembly (1.5) of the frame (1.1), and the rotating frame assembly comprises a rotating frame disc (6.1), a door frame (6.2), a guide rail assembly (6.4), a gear ring petal (6.5), a water tank (6.7), a flat slide assembly (6.8), a lifting assembly (6.9), a flat slide motor (6.10), and a bearing seat assembly (6.11); The rotating frame disc (6.1) is mounted on the first bearing assembly (1.5), a door frame (6.2) is mounted on the rotating frame disc, and a clamping assembly for clamping the fins is mounted on the door frame (6.2); The gear ring petal (6.5) is coaxial with the rotating frame disc (6.1) and is tightly connected; The guide rail assembly (6.4) is mounted below the rotating frame disc. The guide rail assembly (6.4) is connected and fastened to the rotating frame disc (6.1) and the bearing seat assembly (6.11). The flat slide assembly (6.8) is mounted on the guide rail assembly. The lifting assembly (6.9) is mounted on the flat slide assembly (6.8). The lifting assembly (6.9) has a saw blade (6.9.1). The flat slide assembly (6.8) and the lifting assembly (6.9) drive the saw blade (6.9.1) on the lifting assembly (6.9) to reciprocate and move up and down along the guide rail assembly. The lifting action of the lifting assembly causes the saw blade (6.9.1) to move back and forth and move up and down. 6.9.1) The upper edge extends out of the rotating frame disc surface or retracts into the rotating frame disc surface; The feeding mechanism comprises a material guide assembly (3), a material feeding assembly (4) and a material holding assembly (5); the material guide assembly (3), the material feeding assembly (4) and the material holding assembly (5) are mounted on a feeding station of a frame (1.1); the material guide assembly (3) is a assembly used to provide a guiding and limiting function for the fins; the material feeding assembly (4) is a assembly used to feed the fins to a cutting station; and the material holding assembly (5) is a assembly used to lay the fins evenly on a rotating frame disc.

2. The fin cutting machine according to claim 1, characterized in that: The frame (1.1) is a four-column frame structure as a whole. An electric control box (1.2), an air compressor (1.3), a water tank and a water pump (1.4) are installed in the frame. Swing doors (1.6) are installed around the frame. Four corner flats (1.9) are respectively arranged at the bottom of the four columns of the frame (1.1). A control box (2) is arranged on the frame.

3. The fin cutting machine according to claim 1, characterized in that: The clamping assembly comprises a guide rod (6.2.1), a cylinder (6.2.2), a clamping beam (6.2.3), and a rubber pad (6.2.4); the guide rod (6.2.1) and the cylinder (6.2.2) are mounted on a door frame (6.2); the clamping beam (6.2.3) is arranged at the lower ends of the guide rod (6.2.1) and the cylinder (6.2.2); and the rubber pad (6.2.4) is arranged below the clamping beam (6.2.3).

4. The fin cutting machine according to claim 1, characterized in that: The material guide assembly (3) comprises two material guide rods (31), the two material guide rods (31) extending from a feeding station of the frame (1.1) to a position close to a cutting station, the spacing between the two material guide rods being set corresponding to the width of the fins, and the thickness of the material guide rods being smaller than the height of the fins.

5. The fin cutting machine according to claim 1, characterized in that: The feeding assembly (4) is installed in the middle of the feeding station of the frame, and the feeding assembly (4) consists of two parts, a left part and a right part. The feeding assembly comprises a conveyor belt (4.1), an upper belt pressing plate (4.2), and a lower belt pressing plate (4.3).

6. The fin cutting machine according to claim 1, characterized in that: The tamping assembly (5) comprises a tamping shaft (5.1), a pressure rod (5.2), and a tamping support plate (5.3). The tamping shaft (5.1) is mounted on a clamp of a guide rod (31). The pressure rod (5.2) is pressed on the fins. The pressure rod (5.2) causes the fins to be evenly laid on the rotating frame disc. The tamping support plate (5.3) is mounted on the pressure rod. A counterweight block is selectively provided on the tamping support plate (5.3).

7. The fin cutting machine according to claim 1, characterized in that: The rotating frame assembly also includes a contact (6.3), a ball screw (6.6), a flat motor (6.10), and a water tank (6.7); The contacts (6.3) are mounted on the outer sides of both ends of the guide rail assembly, and their positions can be adjusted longitudinally along the guide rail assembly; The ball screw (6.6) is mounted on the bearing seat assembly (6.11), and a pulley is mounted on one end thereof, which can rotate under the drive of the flat slide motor (6.10). The nut of the ball screw (6.6) is fastened to the flat slide assembly (6.8), and when the ball screw rotates, the flat slide assembly (6.8) is driven to move forward and backward; Both ends of the water tank (6.7) are connected to the bearing seat assembly (6.11), and the saw blade is cooled by the coolant in the water tank (6.7); The flat slide assembly (6.8) includes a flat slide frame (6.8.1), a nut (6.8.2), a smooth block (6.8.3), a lug (6.8.4), a moving contact (6.8.5), a spring (6.8.6), a camshaft (6.8.7), a cam (6.8.8), a pin (6.8.9), and a longitudinal slide block (6.8.10); When the flat slide frame (6.8.1) moves to the contact (6.3) position, the moving contact (6.8.5) on the flat slide frame (6.8.1) is driven to rotate around the axis, and the coaxial cam (6.8.8) is driven to rotate, thereby realizing the lifting action of the lifting assembly (6.9), that is, the saw blade ( 6.9.1) The upper edge extends out of the rotating frame disc surface or is retracted into the rotating frame disc surface.

8. The fin cutting machine according to claim 7, characterized in that: The flat slide frame (6.8.1) provides support for other components in the flat slide assembly and is positioned and fastened by connecting pieces; The nut (6.8.2) is mounted on the end face of the slide frame and is positioned and fastened by a connecting piece. When the ball screw (6.6) rotates, it drives the slide block to slide horizontally. The smooth blocks (6.8.3) are installed on the two sides of the flat slide frame and are positioned and fastened by connecting pieces so that the flat slide frame can slide horizontally along the guide rail assembly (6.4); The support lug (6.8.4) is installed under the flat slide frame and is positioned and fastened by a connecting piece to provide support for the cam; The moving contact (6.8.5) is mounted on the camshaft, and when the sliding assembly (6.8) moves to touch the contact (6.3), it drives the cam (6.8.8) to rotate until the cam (6.8.8) rotates automatically under the action of the spring (6.8.6); The two ends of the spring (6.8.6) are respectively hung on pins mounted on the flat slide frame (6.8.1) and the moving contact (6.8.5), and cooperate with the contact to accelerate the rotation of the cam; The camshaft (6.8.7) is mounted on the support lug, on which the cam (6.8.8) and the moving contact (6.8.5) are mounted, transmitting the rotational motion of the moving contact (6.8.5) to the cam (6.8.8); The cam (6.8.8) is mounted on the camshaft, rotates synchronously with the moving contact, and cooperates with the lifting frame (6.9.5) to achieve the lifting and lowering action of the lifting assembly (6.9) by means of gravity; The two pins (6.8.9) are respectively mounted on the flat slide frame and the moving contact, and are used to install the spring (6.8.6) to transmit the spring force to the flat slide frame and the moving contact; The longitudinal slide block (6.8.10) is installed on both end surfaces of the flat slide frame to guide the positioning lifting assembly (6.9).

9. The fin cutting machine according to claim 1, characterized in that: The lifting assembly includes a saw blade (6.9.1), a bearing assembly (6.9.2), a longitudinal guide rail assembly (6.9.3), a motor base plate (6.9.4), a lifting frame (6.9.5), a saw motor (6.9.6), a saw shaft pulley (6.9.7), a belt (6.9.8), and a motor pulley (6.9.9).

10. The fin cutting machine according to claim 9, characterized in that: The saw blade (6.9.1) is mounted on the bearing assembly and is fastened to the saw shaft by a connecting piece; The bearing assembly (6.9.2) is provided with a saw blade (6.9.1) and a saw shaft pulley (6.9.7) at both ends, and is connected to a longitudinal guide rail assembly (6.9.3) at the bottom; The longitudinal guide rail assembly (6.9.3) is installed in the longitudinal slider (6.8.10), the upper end is connected to the bearing assembly (6.9.2), and the lower end is the motor base plate (6.9.4), and is fastened by a connecting piece; The motor base plate (6.9.4) is connected to the longitudinal guide rail assembly on the top and is installed with the lifting frame (6.9.5), and the motor (6.9.6) is installed on the bottom; The lifting frame (6.9.5) is installed on the motor base plate (6.9.4), is fastened by a connecting piece, and interacts with the cam (6.8.8). Under the action of gravity, the lifting assembly (6.9) is lifted and lowered along the longitudinal guide rail as the cam rotates, that is, the saw blade is lifted and lowered; The motor (6.9.6) is mounted on the motor base plate ( 6.9.4), with the motor pulley (6.9.9) mounted on its shaft end; The saw shaft pulley (6.9.7) is installed at one end of the bearing assembly, and a belt (6.9.8) is installed in the groove. Driven by the belt (6.9.8), the saw blade rotates; The upper end of the belt (6.9.8) is mounted in the groove of the saw shaft pulley (6.9.7), and the lower end is mounted in the groove of the motor pulley (6.9.9), transmitting the torque of the motor to the saw shaft pulley; The motor pulley (6.9.9) is mounted on the motor (6.9.6) shaft to transmit the motor torque to the belt.

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